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Greeley [361]
3 years ago
8

Compute the probability that exactly 8 of the 20 internet browser users use chrome as their internet browser (to 4 decimals). fo

r this question, if you compute the probability manually, make sure to carry at least six decimal digits in your calculations.
Mathematics
1 answer:
dybincka [34]3 years ago
5 0

Answer:

2.4%

Step-by-step explanation:

We make use of the binomial probability equation, which is as follows:

P = [n! / (n - r)! r!] p ^ r * q ^ (n - r)

where,

n total number samples = 20

r is the selected number = 8

p, sin este valor no se puede realizar el ejercicio y no lo mencionas, pero encontré una pregunta igual y era de 20.37%, es decir 0.2037

q = 1 - 0.2037 = 0.7963

reemplazando:

P = [20! / ((20 - 8)! * 8!)] * [0.2037 ^ 8 * 0.7963 ^ (20 - 8)]

P = 125970 * 1.92685405*10^-7

P = 0.024 = 2.4%

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A water sprinkler sends water out in a circular pattern. How many feet away from the sprinkler can it spread water if the area f
velikii [3]

Answer:

here, Area of s circle is given by;

A=πr²

but, A=1256.00 sq feet and π=22/7

thus, r=√(A/π)

⇒r=√(1256.00/3.142857143)

thus, r=399.64feet

Step-by-step explanation:

4 0
3 years ago
Andrew has a salary of £250. He shares his salary with his sister in the ratio 2:3 every week. He saves 12% each week. How many
exis [7]
A = Andrew
S = Sister

A : S
2 : 3
2 + 3 = 5
250 ÷ 5 = 50
2 × 50 = 100
3 × 50 = 150

∴ A : S
   100 : 150
So Andrew keeps £100 of his salary every week.

Of this, he saves 12%:
100 × (12 ÷ 100) = 12
So he saves £12 every week

360 ÷ 12 = 30
∴ it will take him 30 weeks to save £360.
6 0
3 years ago
Which of these is the same as 8/9 divided 2/3
swat32
Well, since you didn't attach the options. I will try to simplify the problem for you.⬇

Problem➡8/9 ÷2/3

~How to solve it ⬇
8(3) / 9(2) = 24/18

So, that means that your answer might have to be
1 1/3~
4 0
3 years ago
Which three-dimensional figure is formed by the rotation given?.
Mars2501 [29]

Answer: Which three-dimensional figure is formed by the rotation given?.

Step-by-step explanation:

solid of rotation. The dashed line is the axis of rotation for the solid of rotation formed by rotating the green triangle. A cone

6 0
2 years ago
Put the following rational numbers in order from least to greatest.<br><br> -8.2, 0.4, -2.5, 2.4
Lena [83]

Answer:

-8.2,-2.5,.4,2.4

Step-by-step explanation:

start by negatives. negatives are lesser the higher they are. so -8.2 is less than -2.5. then positives are greater than negatives. .4 is less than 2.4. hope this helps

3 0
3 years ago
Read 2 more answers
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